LT3083IQ#TRPBF

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Regulator
• Characteristics: High-performance, low dropout linear regulator
• Package: 5-Lead DD-Pak (TO-263)
• Essence: Provides a regulated output voltage with low dropout voltage and high current capability
• Packaging/Quantity: Tape & Reel, 250 units per reel

Specifications

• Input Voltage Range: 1.2V to 36V
• Output Voltage Range: 0.8V to 32V
• Dropout Voltage: 350mV at 1.5A load current
• Output Current: Up to 1.5A
• Line Regulation: ±0.02% typical
• Load Regulation: ±0.04% typical
• Quiescent Current: 1.5mA typical
• Operating Temperature Range: -40°C to 125°C

Pin Configuration

The LT3083IQ#TRPBF has the following pin configuration:

1. IN: Input voltage pin
2. ADJ: Adjust pin for setting the output voltage
3. OUT: Output voltage pin
4. GND: Ground pin
5. NC: No connection pin

Functional Features

• Low dropout voltage: Allows operation with very small input-output differentials
• High output current: Capable of delivering up to 1.5A
• Adjustable output voltage: The ADJ pin allows precise setting of the desired output voltage
• Fast transient response: Maintains stability even during sudden load changes
• Thermal shutdown protection: Prevents damage due to excessive temperature

Advantages and Disadvantages

Advantages

• Wide input voltage range enables versatile applications
• Low dropout voltage minimizes power dissipation
• High output current capability suits power-hungry devices
• Adjustable output voltage provides flexibility
• Excellent line and load regulation ensures stable performance

Disadvantages

• Relatively high quiescent current compared to some other regulators
• Limited package options may not be suitable for all designs

Working Principles

The LT3083IQ#TRPBF is a linear regulator that uses a PNP pass transistor to provide a regulated output voltage. It operates by comparing the reference voltage with the feedback voltage obtained from the output through a voltage divider network. The pass transistor adjusts its resistance to maintain the desired output voltage, compensating for changes in load and input voltage.

Detailed Application Field Plans

The LT3083IQ#TRPBF finds applications in various fields, including:

1. Power supplies for microcontrollers and digital circuits
2. Battery-powered devices requiring stable voltage levels
3. Automotive electronics and infotainment systems
4. Industrial control systems and instrumentation
5. Audio amplifiers and preamplifiers
6. LED lighting and display panels
7. Portable medical devices

Detailed and Complete Alternative Models

1. LT3080: Similar specifications but with a different package (TO-220)
2. LT3081: Higher output current capability (up to 3A)
3. LT3082: Lower output current capability (up to 500mA)
4. LT3084: Adjustable positive voltage regulator variant
5. LT3085: Adjustable negative voltage regulator variant

These alternative models offer similar functionality and can be considered based on specific requirements.

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